1650012071940 has 96 divisors (see below), whose sum is σ = 5134465714560. Its totient is φ = 439909377408.

The previous prime is 1650012071933. The next prime is 1650012071977. The reversal of 1650012071940 is 491702100561.

1650012071940 is a `hidden beast` number, since 16 + 500 + 120 + 7 + 19 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1650012071895 and 1650012071904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2226942 + ... + 2873898.

It is an arithmetic number, because the mean of its divisors is an integer number (53484017860).

Almost surely, 2^{1650012071940} is an apocalyptic number.

1650012071940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1650012071940 is an abundant number, since it is smaller than the sum of its proper divisors (3484453642620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1650012071940 is a wasteful number, since it uses less digits than its factorization.

1650012071940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651698 (or 651690 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 1650012071940 in words is "one trillion, six hundred fifty billion, twelve million, seventy-one thousand, nine hundred forty".